Record Details
page 132
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 132 Central Utah Project, Bonneville Unit : Diamond Fork Power System : final Environmental Impact Statement, page 132 |
| Coverage | Electronic reproduction; |
| Format | 132 text/PDF |
| Rights | Brigham Young University; http://lib.byu.edu/about/copyright/generic.php Public Domain Public |
| Language | English; eng; en |
| Relation | Central Utah Project; Western Waters Digital Library; CHAPTER IV AFFECTED environment AND environmental consequences temperature computer models were applied to the fifth water pumped storage alternative f for or the DES the results of that modeling water quality data from nearby reservoirs and professional judgment were used to extrapolate for the other alternatives for the FEIS additional hand calculations were performed on proposed reservoirs and experience and professional judgment were also used to project future temperatures because of the inherent problems assumptions and longterm long iong term data re quired quiren etc of applying the temperature models and because of the com plexity plecity of the system the future strawberry aqueduct and the enlarged strawberry reservoir as input to three proposed diamond fork reservoirs in series reclamation is confident that the temperature projections for the recommended sixth water flow through alternative as well as for the other alternatives are as fully supportable and as accurate as the computer temperature models although time and manpower restraints pre cluded clouded the direct application of these models to the recommended plan reclamation does not believe that the possible small adjustments to tem perature pesature pera ture projections would justify the delay and expense of using the models the temperature ranges projected for all of the alternatives would not cause significant impacts nor have they been a major issue and they would not affect the selection of an alternative or the design of the power system for each of the proposed reservoirs empirical phosphorus models were used to project the trophic state classification and the probability of eutrophication methods of predicting algal dominance were also applied to each reservoir because the present inorganic nitrogen levels in strawberry reservoir are normally low each proposed reservoir would be expected to have a summerfall summersall summer fall probability of dominance by blue green algae of about 90 percent blue green algae is presently dominant seasonally in strawberry and soldier creek reservoirs which agrees with this analysis the high hydraulic flushing rates that would occur in the proposed small less than 5000 acre feet reservoirs may induce mixing and light conditions that would preclude blue green dominance the projected water quality conditions for the different reservoirs and the effects of the alternative plans on water quality in the lower diamond fork spanish fork river are summarized in tables 28 29 and 30 and are discussed below recommended plan both syar and sixth water reservoirs would be very small with de tention times of 1 to 2 days 0005 0.005 0005 year and both would be completely mixed systems because of the short detention times the water in those reservoirs and the water released to monks hollow reservoir is expected to be similar in quality temperature dissolved oxygen and nutrients to the water released from strawberry reservoir however anoxic waters from strawberry reservoir would be aerated in these mixed reservoirs as discussed below 132 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/4561 |
